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path: root/drivers/uwb/drp-ie.c
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Diffstat (limited to 'drivers/uwb/drp-ie.c')
-rw-r--r--drivers/uwb/drp-ie.c161
1 files changed, 123 insertions, 38 deletions
diff --git a/drivers/uwb/drp-ie.c b/drivers/uwb/drp-ie.c
index 882724c5f126..2840d7bf9e67 100644
--- a/drivers/uwb/drp-ie.c
+++ b/drivers/uwb/drp-ie.c
@@ -16,13 +16,102 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
+
+/*
+ * Return the reason code for a reservations's DRP IE.
+ */
+int uwb_rsv_reason_code(struct uwb_rsv *rsv)
+{
+ static const int reason_codes[] = {
+ [UWB_RSV_STATE_O_INITIATED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_PENDING] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_MODIFIED] = UWB_DRP_REASON_MODIFIED,
+ [UWB_RSV_STATE_O_ESTABLISHED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_TO_BE_MOVED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_MOVE_COMBINING] = UWB_DRP_REASON_MODIFIED,
+ [UWB_RSV_STATE_O_MOVE_REDUCING] = UWB_DRP_REASON_MODIFIED,
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_CONFLICT] = UWB_DRP_REASON_CONFLICT,
+ [UWB_RSV_STATE_T_PENDING] = UWB_DRP_REASON_PENDING,
+ [UWB_RSV_STATE_T_DENIED] = UWB_DRP_REASON_DENIED,
+ [UWB_RSV_STATE_T_RESIZED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED,
+ };
+
+ return reason_codes[rsv->state];
+}
+
+/*
+ * Return the reason code for a reservations's companion DRP IE .
+ */
+int uwb_rsv_companion_reason_code(struct uwb_rsv *rsv)
+{
+ static const int companion_reason_codes[] = {
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED,
+ };
+
+ return companion_reason_codes[rsv->state];
+}
+
+/*
+ * Return the status bit for a reservations's DRP IE.
+ */
+int uwb_rsv_status(struct uwb_rsv *rsv)
+{
+ static const int statuses[] = {
+ [UWB_RSV_STATE_O_INITIATED] = 0,
+ [UWB_RSV_STATE_O_PENDING] = 0,
+ [UWB_RSV_STATE_O_MODIFIED] = 1,
+ [UWB_RSV_STATE_O_ESTABLISHED] = 1,
+ [UWB_RSV_STATE_O_TO_BE_MOVED] = 0,
+ [UWB_RSV_STATE_O_MOVE_COMBINING] = 1,
+ [UWB_RSV_STATE_O_MOVE_REDUCING] = 1,
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = 1,
+ [UWB_RSV_STATE_T_ACCEPTED] = 1,
+ [UWB_RSV_STATE_T_CONFLICT] = 0,
+ [UWB_RSV_STATE_T_PENDING] = 0,
+ [UWB_RSV_STATE_T_DENIED] = 0,
+ [UWB_RSV_STATE_T_RESIZED] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = 1,
+
+ };
+
+ return statuses[rsv->state];
+}
+
+/*
+ * Return the status bit for a reservations's companion DRP IE .
+ */
+int uwb_rsv_companion_status(struct uwb_rsv *rsv)
+{
+ static const int companion_statuses[] = {
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = 0,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 0,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = 0,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = 0,
+ };
+
+ return companion_statuses[rsv->state];
+}
+
/*
* Allocate a DRP IE.
*
@@ -34,16 +123,12 @@
static struct uwb_ie_drp *uwb_drp_ie_alloc(void)
{
struct uwb_ie_drp *drp_ie;
- unsigned tiebreaker;
drp_ie = kzalloc(sizeof(struct uwb_ie_drp) +
UWB_NUM_ZONES * sizeof(struct uwb_drp_alloc),
GFP_KERNEL);
if (drp_ie) {
drp_ie->hdr.element_id = UWB_IE_DRP;
-
- get_random_bytes(&tiebreaker, sizeof(unsigned));
- uwb_ie_drp_set_tiebreaker(drp_ie, tiebreaker & 1);
}
return drp_ie;
}
@@ -104,43 +189,17 @@ static void uwb_drp_ie_from_bm(struct uwb_ie_drp *drp_ie,
*/
int uwb_drp_ie_update(struct uwb_rsv *rsv)
{
- struct device *dev = &rsv->rc->uwb_dev.dev;
struct uwb_ie_drp *drp_ie;
- int reason_code, status;
+ struct uwb_rsv_move *mv;
+ int unsafe;
- switch (rsv->state) {
- case UWB_RSV_STATE_NONE:
+ if (rsv->state == UWB_RSV_STATE_NONE) {
kfree(rsv->drp_ie);
rsv->drp_ie = NULL;
return 0;
- case UWB_RSV_STATE_O_INITIATED:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 0;
- break;
- case UWB_RSV_STATE_O_PENDING:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 0;
- break;
- case UWB_RSV_STATE_O_MODIFIED:
- reason_code = UWB_DRP_REASON_MODIFIED;
- status = 1;
- break;
- case UWB_RSV_STATE_O_ESTABLISHED:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 1;
- break;
- case UWB_RSV_STATE_T_ACCEPTED:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 1;
- break;
- case UWB_RSV_STATE_T_DENIED:
- reason_code = UWB_DRP_REASON_DENIED;
- status = 0;
- break;
- default:
- dev_dbg(dev, "rsv with unhandled state (%d)\n", rsv->state);
- return -EINVAL;
}
+
+ unsafe = rsv->mas.unsafe ? 1 : 0;
if (rsv->drp_ie == NULL) {
rsv->drp_ie = uwb_drp_ie_alloc();
@@ -149,9 +208,11 @@ int uwb_drp_ie_update(struct uwb_rsv *rsv)
}
drp_ie = rsv->drp_ie;
+ uwb_ie_drp_set_unsafe(drp_ie, unsafe);
+ uwb_ie_drp_set_tiebreaker(drp_ie, rsv->tiebreaker);
uwb_ie_drp_set_owner(drp_ie, uwb_rsv_is_owner(rsv));
- uwb_ie_drp_set_status(drp_ie, status);
- uwb_ie_drp_set_reason_code(drp_ie, reason_code);
+ uwb_ie_drp_set_status(drp_ie, uwb_rsv_status(rsv));
+ uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_reason_code(rsv));
uwb_ie_drp_set_stream_index(drp_ie, rsv->stream);
uwb_ie_drp_set_type(drp_ie, rsv->type);
@@ -169,6 +230,27 @@ int uwb_drp_ie_update(struct uwb_rsv *rsv)
uwb_drp_ie_from_bm(drp_ie, &rsv->mas);
+ if (uwb_rsv_has_two_drp_ies(rsv)) {
+ mv = &rsv->mv;
+ if (mv->companion_drp_ie == NULL) {
+ mv->companion_drp_ie = uwb_drp_ie_alloc();
+ if (mv->companion_drp_ie == NULL)
+ return -ENOMEM;
+ }
+ drp_ie = mv->companion_drp_ie;
+
+ /* keep all the same configuration of the main drp_ie */
+ memcpy(drp_ie, rsv->drp_ie, sizeof(struct uwb_ie_drp));
+
+
+ /* FIXME: handle properly the unsafe bit */
+ uwb_ie_drp_set_unsafe(drp_ie, 1);
+ uwb_ie_drp_set_status(drp_ie, uwb_rsv_companion_status(rsv));
+ uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_companion_reason_code(rsv));
+
+ uwb_drp_ie_from_bm(drp_ie, &mv->companion_mas);
+ }
+
rsv->ie_valid = true;
return 0;
}
@@ -219,6 +301,8 @@ void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie)
u8 zone;
u16 zone_mask;
+ bitmap_zero(bm->bm, UWB_NUM_MAS);
+
for (cnt = 0; cnt < numallocs; cnt++) {
alloc = &drp_ie->allocs[cnt];
zone_bm = le16_to_cpu(alloc->zone_bm);
@@ -230,3 +314,4 @@ void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie)
}
}
}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 01:21:14 +0000